Home / 3,912.57-5,399.55-2,319.32

Finding the Fourth Proportional to 3,912.57, 5,399.55 and 2,319.32

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Solution

The fourth proportional to 3,912.57, 5,399.55 and 2,319.32 is: 3,200.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.57 : 5,399.55 = 2,319.32 : x
  2. Step 2: Convert to fraction form
    3,912.57/5,399.55 = 2,319.32/x
  3. Step 3: Cross multiply
    3,912.57x = 5,399.55 × 2,319.32
  4. Step 4: Simplify right side
    3,912.57x = 12,523,257.31
  5. Step 5: Solve for x
    x = 12,523,257.31/3,912.57
  6. Step 6: Final answer
    x = 3,200.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.